sys/compat/netbsd32/netbsd32_execve.c

   1 /*      $NetBSD: netbsd32_execve.c,v 1.31 2007/12/20 23:03:01 dsl Exp $ */
   2
   3 /*
   4  * Copyright (c) 1998, 2001 Matthew R. Green
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  22  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  */
  28
  29 #include <sys/cdefs.h>
  30
  31 __KERNEL_RCSID(0, "$NetBSD: netbsd32_execve.c,v 1.31 2007/12/20 23:03:01 dsl Exp $");
  32
  33 #include <sys/param.h>
  34 #include <sys/systm.h>
  35 #include <sys/mount.h>
  36 #include <sys/stat.h>
  37 #include <sys/vnode.h>
  38 #include <sys/file.h>
  39 #include <sys/filedesc.h>
  40 #include <sys/syscallargs.h>
  41 #include <sys/proc.h>
  42 #include <sys/exec.h>
  43
  44 #include <compat/netbsd32/netbsd32.h>
  45 #include <compat/netbsd32/netbsd32_syscall.h>
  46 #include <compat/netbsd32/netbsd32_syscallargs.h>
  47
  48 static int
  49 netbsd32_execve_fetch_element(char * const *array, size_t index, char **value)
  50 {
  51         int error;
  52         netbsd32_charp const *a32 = (void const *)array;
  53         netbsd32_charp e;
  54
  55         error = copyin(a32 + index, &e, sizeof(e));
  56         if (error)
  57                 return error;
  58         *value = (char *)NETBSD32PTR64(e);
  59         return 0;
  60 }
  61
  62 int
  63 netbsd32_execve(struct lwp *l, const struct netbsd32_execve_args *uap, register_t *retval)
  64 {
  65         /* {
  66                 syscallarg(const netbsd32_charp) path;
  67                 syscallarg(netbsd32_charpp) argp;
  68                 syscallarg(netbsd32_charpp) envp;
  69         } */
  70         const char *path = SCARG_P32(uap, path);
  71
  72         return execve1(l, path, SCARG_P32(uap, argp),
  73             SCARG_P32(uap, envp), netbsd32_execve_fetch_element);
  74 }